[dev.garbage] runtime: raise StackGuard limit for Windows (again)
640 bytes ought to be enough for anybody.
We'll bring this back down before Go 1.5. That's issue 9214.
TBR=rlh
CC=golang-codereviews
https://golang.org/cl/188730043
diff --git a/src/runtime/stack2.go b/src/runtime/stack2.go
index e50b32c..8a78b1a 100644
--- a/src/runtime/stack2.go
+++ b/src/runtime/stack2.go
@@ -84,7 +84,7 @@
// The stack guard is a pointer this many bytes above the
// bottom of the stack.
- _StackGuard = 512 + _StackSystem
+ _StackGuard = 640 + _StackSystem
// After a stack split check the SP is allowed to be this
// many bytes below the stack guard. This saves an instruction
